The prevalence of cancer is rising both in Canada and across the world, with approximately 35 million new cases predicted by 2050. Cancer immunotherapy is a form of treatment that harnesses the body’s immune system to fight cancer cells, increasing life expectancy beyond what traditional treatments offer. Immunotherapy may cause immune-related adverse events that differ from the toxicities of traditional treatments. While these events can be detrimental to health, it is critical that they are caught early. This perspective paper examines the evolving role of oncology nurses within the cancer care continuum in caring for patients receiving cancer immunotherapy, specifically immune checkpoint inhibitors. Oncology nurses provide care in many areas, specifically in educating patients on the early detection of side effects to prevent negative outcomes, assessing and monitoring patient symptoms through a variety of means, including nurse-led clinics, and providing support to patients undergoing therapy. This work helps identify gaps in the literature. Future research is required for advancing cancer immunotherapies and better detecting early signs of side effects for nurses practicing in different settings, ensuring timely care.